When a mild-mannered high school teacher overhears his neighbor trying to defend herself against her abusive ex, he decides to help her. Kwak Min-ho, Kim Yoon-seong, Cho Jin-woong, Ryoo Seung-bum, Lee Yo-won, Seung-bum Ryoo, Yo-won Lee, Jin-woong Jo, Yoon-Seong Kim Added on Netflix 2023-01-10. Youtube Trailer